### Hybrid LES/RANS simulations of a 90° pipe bend using different CFD solvers

This directory contains one representative case file from the study described in 
'Hybrid LES/RANS simulations of a 90° pipe bend using different CFD solvers' 
by A. Ekat, A. Weissenbrunner, M. Straka, T. Eichler and K. Oberleithner. 

In this study the performance of several RANS and hybrid LES/RANS turbulence models using different CFD solvers (ANSYS Fluent, OpenFOAM and RapidCFD) is investigated.
The comparison is realised on the basis of predicting the flow development downstream of a 90° bend, with a focus on time-averaged velocity profiles up to 
approximately 31 times the pipe diameter D.

This folder contains all files to run the representative case:  SST-IDDES turbulence model, mesh2a, fully developed inlet.


### Run the case
At first the mesh (generated in Ansys ICEM) must be transferred to OpenFOAM:
``fluent3DMeshToFoam mesh2a.msh``

A mean fully developed turbulent flow profile (velocity components and turbulence quantities) at the inlet taken from a precusor simulation is included in folder ``0``.

Run this case as any other case by decomposing according to your hardware and run ``pimpleFoam`` in parallel.

This case works with OpenFOAM (OpenCFD Ltd) v1812.
 

### License
[GNU](http://www.gnu.org/licenses/)
